Ginger Snaps 2: Unleashed. Katharine Isabelle and Emily Perkins reprise their roles from the first film as sisters Ginger and Brigitte, respectively. This time around, Brigitte is found by the police after being attacked and taken to rehab when it's assumed that the wolfbane serum that keeps her from turning into a monster is a narcotic. Once inside the facility and denied the substance, Brigitte must strike deals with one of the orderlies to obtain it; meanwhile, she is pursued by another werewolf, and escapes with Ghost, another female patient, to that girl's vacant old house, which sets the stage for a brutal showdown -- made even nastier when the orderly, a hospital doctor, and the elderly Barbara show up and decide to intervene. Also starring Tatiana Maslany, Ginger Snaps 2: Unleashed was followed only a few months later by Ginger Snaps Back.
